[BlueScreenDeath]

Why not charge for the app AND then with the income you have incentive to keep supporting old devices.

[stjohnswarts]

Because the money earned vs old devices probably isn't worth it. At some point you have to cut support on old stuff unless there is some financial pay off or you're retired and want a hobby to keep you busy.

[wmf]

Of course you could use revenue from paying customers to support moochers, but there's no real incentive to do so and it's arguably unfair.